<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin:0;
            padding:0;
        }
        html,body{
            background-color:lightyellow;
            width:100%;
            height:100%;
        }
    </style>

</head>
<body>
<h1>欢迎跳转</h1>

</body>
</html>